Fluid shut-off.



R. SALMON.

'FLUID SHUT-OFF. APPLIGATION FILED 14111.11, 1911.

1,026,884, Patented May 21, 1912.

WJTNES'SES.- INVENTOR.

Mb 1 gmalm UNITED STATES PATENT OFFICE.

ROYAL SALMON, OF KANSAS CITY, MISSOURI.

FLUID SHUT-OFF.

Specification of Letters Patent.

Application led March 11, 1,911.

PatenteaMay 2,1, 1912. Serial No. 613,938.

To all whom it may concern:

Be it known that I, ROYAL SALMON, a citizen of the United States, residingwat Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in4 Fluid. Shut- Offsfof which the following is a specification.

This invention relates to fiuid shuteotls of thatvclass designed to close automatically through the melting of a fuse or the tripping of a trigger by manual or other power, and my object is to produce a shut-o ff wlnch can bc closed by manual power in the event the fuse fails to melt or the valve of the apparatus fails to close after the fuse has melted.

A further objectv is to produce a valve which will operate with but little friction and a shut-oil' apparatus of simple, strong, compact and inexpensive construction.

l/Vith these objects in view the invention consists in certain novel and peculiar features ofconstruction and organization as hereinafter described and elalmed and in Order that itv may be fully understood ref- I tion onuthe line III-III of Fig. 1. Fig.

4, is a section on the line IV- IV of Fig. 2. Referring now to the drawlngs, 1 and 2 i indicate the gas supply and distributing pipes for a house or building, and said pipes are connected by a valve cz sing consisting of a body 3 and a removabl head 4. The body is formed with a pair of recesses 5 and with a ball cavity or socket 6, and the head is formed with an opening 7 and a ball-race 8.

The valve is of the plug type as shown at 9, and isprovided at one end with a cavity or socket 10, which with cavity 6, receives a ball or pivot 11. At the opposite end oi" the valve projects its stem in axial alinement withthe said ivot, and extendin `concentrically around) the stem is'a bal -race 13, which with ball-race 8, receives the bearing balls 14, so that the valve shall have .to overcome but little friction in turning, it being noticed in this connection that the provision of the recesses 5 reduces the fric- `tional contact area between the valve plug and the casing. The stem of the valve plug projects through a stuffing box 15, and has secured to its outer end a lever 16, equipped with a slidable weight 17 provided with a nsetscrew 18, the latter serving to secure the nect-ion 23, whereby the lever can be positively depressed manua'lly, if necessary, it being understood that said connection may lead to any desired point where it will be accessible to a fireman or other person willing to assume responsibility for its opera.

tion.

For engagement with the shoulder of the trigger to hold the lever elevated and the valve open, a movable plate 24 is pivoted at 25 to a bracket 26 secured to the casing, said plate being provided with a pin 27 over which the beveled end of the trigger rides preliminary to the engagement of the pin by the shoulder' of the trigger, and to support the plate in position to hold the level' elevated, the former is provided with a pin 28 to bear against the fusible support 29 extending between a pair of arms 30, projecting from the upper end of the bracket 26, the destruction of the fusible support from an cause leaving the weighted lever free to rop and close the valve, a stop-arm 31, projecting from the casing to limit downward movement of the said lever-` and to facilitate and render more certain the depression of the lever under a pull applied through connection 23, said lever is provided with a pinq32 which arrests the pivotal movement of the trigger immediately its shoulder clears the pin 27 so that the continuation of'said pull shall be exerted in a downward direction on the lever.

Assuming that a fire breaks out in a building equipped with my shut-off, anyone familiar with the shut-off or understanding its purpose can effect the closure of the valve by-rneans of the pull connection irrespective of -whether the fusible support is intact or not. If'the f ire gets hot enough to melt the fusible support before the valve is closed, the weight of the lever will effect the closure of the valve, the plate 24' through its engagement by the trigger, being compelled to swing to a pivotally-pendent position from pivot 525.

From the above description it will. be seen that I have produced. a fluid shut-oil' possess.-y

ing the featuresof advantage enumerated as desirable, and which is susceptible of modification in cert-ain particulars without departing from the principle of construction involved or the spirit of the appended claims.l Y

I claim 1. A fluid shut-off, comprising a valve, av

lever for closing the valve, a movable holder for normally holdingthe valve open, a fusible support for the holder, a connection between the lever and holder to compel the latter `to moveunder the force of the former when the fusible support is broken, and

meanswhereby the lever can be pulled down until the valve is closed when the fusible support remains intact.

2. A fluid shut-off, comprising a valve, a lever .for closing the valve, a movable holder for normally holding the valve open, a fusible support for the holder, a connection between the lever and holder, and'means to effect disengagement between the holder and the said connection to permit the lever to swing downward and close the valve when the fusible support remains intact. y

3. A fluid shut-oli", comprising a valve, a lever for closing the valve, a movable holder for normally holding the valve open, a fusible support for the holder, a connection between the lever and holder to compel the latter to move under the force of the former when the fusible support is broken, and means to trip the said connection from engagement with the holder when the fusible support remains intact.

4. A fluid-shut-of, comprising a valve,'a lever for closing the valve, a movable holder for normally holding the valve open, a fusible support for 'the holder, a connection between the lever and holder to compel the latter to "move under the force of the former when the fusible support iS broken, and means susceptible of being pulled to trip the saidconnection from engagement with the holder and thus eXert a positive 'downward pull on the lever until the valve is closed when the fusible support remains intact.

5. A Huid shut-off comprising a valve, a lever for closing the valve, a bracket suitably supported, a movable holder pivoted to 4the bracket for normally holding the valve open, a fusiblesupportcarried by the bracket and preventing pivotal movement of the holder, a trigger pivoted to the lever and engaging the said movable holder, and a pull connection to trip the trigger from engagesupport remains intact. y

6. A fluid-shutoff, comprising a valve, a lever for closing the valve, a bracket suitably supported, a movable holder pivoted to the bracket for normally holding the valve oper a fusible support carried by the bracket an preventing. pivotal movementof the holder, a trigger pivotedto the lever and engaging said movable holder, a pull connection to trip the trigger 'from engagement with the, p f

said holder when the fusible supportremains intact,-and a pin projecting from the lever' ,to arrest the pivotal movement of the trigger the lever and the holder and tending to pull the latter inthe same direction that the lever tends to swing when the fusible support remains intact. j

8. A fluid shut-olf, comprising a casing, a rotary plug valve therein, a lever secured to and movablewith the said valve, andtending to swing downward and close the valve,

a bracket secured to the casing and provided with a fusible support, a piv'oted holder for vnormally holding. thelvalve open leaning against the fusible support and tending to swing downward, a trigger pivoted to the lever and detachabl rection that the lever tends to swing, and a pull connection attached to the trigger for hte purpose of tripping the same from en ment with the said holder when the fusible..-

engaging the holderI Iand tending to pull .t e latter in the same digagement with'the sa1d holder when the fusible support 'remains intact. In testimony whereof I affix my signature, in the presence of two witnesses.

' ROYAL SALMON.

Witnesses: p

HELEN C. RoDGERs, G. Y.'TH0RPE. 

